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| author | Baruch Siach <[email protected]> | 2023-10-25 11:08:44 +0300 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2023-11-05 16:11:38 -0500 |
| commit | d44f3d21fe4420709b5a09379b809a3b92b7fa07 (patch) | |
| tree | 931e72fdf65dbfde58b84ee4de4d7cb1f360dbcf /doc/develop | |
| parent | 7907cf80049df56d7a8f66c91626154986fa59e2 (diff) | |
net: designware: add DMA offset awareness
Older DesignWare Ethernet MAC versions that this driver supports can
only work with 32-bit DMA source/destination addresses. Some platforms
have no physical RAM at the lowest 4GB address space. For these
platforms the driver must translate DMA addresses to/from physical
memory addresses.
Call translation routines so that properly configured platforms can use
the DesignWare Ethernet MAC. For platforms using device-tree this
usually means adding dma-ranges property to the bus the device node is
in.
Signed-off-by: Baruch Siach <[email protected]>
Diffstat (limited to 'doc/develop')
0 files changed, 0 insertions, 0 deletions